Results 1 to 10 of about 3,006 (118)
Gradual Destruction of Refractory Stardust in Alkali Brines on Asteroid Bennu [PDF]
Nature CommunicationsCarbonaceous asteroids preserve presolar grains—refractory stardust that predates the Solar System—recording both their stellar origins and subsequent alteration on their parent asteroids.
Pierre Haenecour +8 more
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Pyrrhotite-driven early-stage terrestrial alteration in Ryugu grains [PDF]
Nature CommunicationsSamples returned from the carbonaceous asteroid Ryugu preserve a rare record of water- and organic-rich materials from the early Solar System, but this record can be modified rapidly after arrival on Earth.
Masaaki Miyahara +8 more
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Structure and evolution of interstellar carbonaceous dust. Insights from the laboratory
Frontiers in Astronomy and Space Sciences, 2022 A large fraction of interstellar carbon is locked up in solid grains. The nature, origin and evolution of these grains have been investigated for decades.
Víctor J. Herrero +5 more
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ÆSOPUS 2.0: Low-temperature Opacities with Solid Grains
The Astrophysical Journal, 2023 In this study we compute the equation of state and Rosseland mean opacity from temperatures of T ≃ 30,000 K down to T ≃ 400 K, pushing the capabilities of the Æ SOPUS code into the regime where solid grains can form.
Paola Marigo +5 more
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Gold in ash and slag material of the Primorsk hydroelectric power [PDF]
E3S Web of Conferences, 2020 The paper shows the results of studies on the identification of noble-metal mineralization in various components of ash and slag formations: underburning, aluminosilicate microspheres, initial ash (fed to the magnetic separation of the technological ...
Lavrik Natalia, Henning Peter
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The Astrophysical Journal, 2023 Molecules and particles make up ∼40%–70% of carbon in the interstellar medium, yet the exact chemical structure of these constituents remains unknown. We present carbon K-shell absorption spectroscopy of the Galactic interstellar medium obtained with the
John Staunton, Frits Paerels
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Did a Complex Carbon Cycle Operate in the Inner Solar System?
Life, 2020 Solids in the interstellar medium consist of an intimate mixture of silicate and carbonaceous grains. Because 99% of silicates in meteorites were reprocessed at high temperatures in the inner regions of the Solar Nebula, we propose that similar levels of
Joseph A. Nuth +3 more
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Internal and External Alignment of Carbonaceous Grains within the Radiative Torque Paradigm
The Astrophysical Journal, 2023 We study the internal and external alignment of carbonaceous grains in the interstellar medium (ISM) within the Radiative Torque (RAT) paradigm.
Thiem Hoang +2 more
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Grain Alignment and Rotational Disruption by Radiative Torques in Exoplanet Atmospheres
The Astrophysical Journal, 2023 Dust clouds are ubiquitous in the atmospheres of hot Jupiters and affect their observable properties. The alignment of dust grains in the clouds and resulting dust polarization provide a promising way to study the magnetic fields of exoplanets. Moreover,
Thiem Hoang, Alex Lazarian
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Astronomy & AstrophysicsContext. Observations have revealed the presence of silicate and carbonaceous material in interstellar grains, however, these components are generally assumed to belong to distinct dust populations.
Kyriazis Alexandros +2 more
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